Carbonyl sulfide and dimethyl sulfide fluxes in an urban lawn and adjacent
bare soil in Guangzhou, China |
| |
| Authors: | Zhigang Yi and Xinming Wang |
| |
| Institution: | 1. College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China |
| |
| Abstract: | Carbonyl sulfide (COS) and dimethyl sulfide (DMS) fluxes from an urban Cynodon dactylon lawn and adjacent bare soil were measured during April-July 2005 in Guangzhou, China. Both the lawn and bare soil acted as sinks for COS and sources for DMS.in bare soils. Both COS and DMS fluxes showed diurnal variation with detectable but much lower values in the nighttime than in the daytime. COS fluxes were related significantly to temperature and the optimal temperature for COS uptake was 29℃. While positive linear correlations were found between DMS fluxes and temperature. COS fluxes increased linearly with ambient COS mixing ratios,and had a compensation point of 336 ppt. |
| |
| Keywords: | carbonyl sulfide dimethyl sulfide flux urban lawn |
| 本文献已被 维普 万方数据 PubMed 等数据库收录！ |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |
